package com.zy.mc_module.view;

import android.content.Context;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnFocusChangeListener;
import android.view.animation.Animation;
import android.view.animation.CycleInterpolator;
import android.view.animation.TranslateAnimation;

import androidx.appcompat.content.res.AppCompatResources;
import androidx.appcompat.widget.AppCompatEditText;
import androidx.core.content.ContextCompat;

import com.zy.mc_module.R;

/***
 * 带删除按钮的输入框
 */
public class ClearEditText extends AppCompatEditText implements OnFocusChangeListener, TextWatcher {
    /**
     * 删除按钮的引用
     */
    private Drawable mClearDrawable;
    /**
     * 控件是否有焦点
     */
    private boolean hasFoucs;

    private OnFocusChangeListener listener;

    private TextWatcher textWatcher;

    private MyTextWatcher myTextWatcher;

    public ClearEditText(Context context) {
        this(context, null);
    }

    public ClearEditText(Context context, AttributeSet attrs) {
        // 这里构造方法也很重要，不加这个很多属性不能再XML里面定义
        this(context, attrs, android.R.attr.editTextStyle);
    }

    public ClearEditText(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        init(context);
    }

    private void init(Context context) {
        // 获取EditText的DrawableRight,假如没有设置我们就使用默认的图片
        mClearDrawable = getCompoundDrawables()[2];
        if (mClearDrawable == null) {
            //兼容矢量图
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                mClearDrawable = ContextCompat.getDrawable(getContext(), R.drawable.svg_delect);
            } else {
                mClearDrawable = AppCompatResources.getDrawable(context, R.drawable.svg_delect);
            }

            mClearDrawable.setBounds(0, 0, mClearDrawable.getIntrinsicWidth(), mClearDrawable.getIntrinsicHeight());
            // 默认设置隐藏图标
            setClearIconVisible(false);
            // 设置焦点改变的监听
            setOnFocusChangeListener(this);
            // 设置输入框里面内容发生改变的监听
            addTextChangedListener(this);
        }
    }

    @Override
    public void setOnFocusChangeListener(OnFocusChangeListener l) {
        if (l != this) {
            listener = l;
        }
        super.setOnFocusChangeListener(this);
    }

    @Override
    public void addTextChangedListener(TextWatcher watcher) {
        if (watcher != this) {
            textWatcher = watcher;
        }
        super.addTextChangedListener(this);
    }

    /**
     * 因为我们不能直接给EditText设置点击事件，所以我们用记住我们按下的位置来模拟点击事件 当我们按下的位置 在 EditText的宽度 -
     * 图标到控件右边的间距 - 图标的宽度 和 EditText的宽度 - 图标到控件右边的间距之间我们就算点击了图标，竖直方向就没有考虑
     */
    @Override
    public boolean onTouchEvent(MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_UP) {
            if (getCompoundDrawables()[2] != null) {
                boolean touchable = event.getX() > (getWidth() - getTotalPaddingRight())
                        && (event.getX() < ((getWidth() - getPaddingRight())));
                if (touchable) {
                    this.setText("");
                }
            }
        }
        return super.onTouchEvent(event);
    }

    /**
     * 当ClearEditText焦点发生变化的时候，判断里面字符串长度设置清除图标的显示与隐藏
     */
    @Override
    public void onFocusChange(View v, boolean hasFocus) {
        this.hasFoucs = hasFocus;
        if (hasFocus) {
            setClearIconVisible(getText().length() > 0);
        } else {
            setClearIconVisible(false);
        }
        if (listener != null) {
            listener.onFocusChange(v, hasFocus);
        }
    }

    /**
     * 设置清除图标的显示与隐藏，调用setCompoundDrawables为EditText绘制上去
     *
     * @param visible
     */
    protected void setClearIconVisible(boolean visible) {
        Drawable right = visible ? mClearDrawable : null;
        setCompoundDrawables(getCompoundDrawables()[0], getCompoundDrawables()[1], right, getCompoundDrawables()
                [3]);
    }

    /**
     * 当输入框里面内容发生变化的时候回调的方法
     */
    @Override
    public void onTextChanged(CharSequence s, int start, int count, int after) {
        if (hasFoucs) {
            setClearIconVisible(s.length() > 0);
        }
        if (textWatcher != null) {
            textWatcher.onTextChanged(s, start, count, after);
        }
    }

    @Override
    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        if (textWatcher != null) {
            textWatcher.beforeTextChanged(s, start, count, after);
        }
    }

    @Override
    public void afterTextChanged(Editable s) {
        if (textWatcher != null) {
            textWatcher.afterTextChanged(s);
        }
        if (myTextWatcher != null) {
            myTextWatcher.afterTextChanged(s);
        }
    }

    /***
     * 设置是否可以编辑
     */
    public void setEdit(boolean isedit) {
        this.setEnabled(isedit);
        this.setFocusable(isedit);
    }

    /**
     * 设置晃动动画
     */
    public void setShakeAnimation() {
        this.setAnimation(shakeAnimation(5));
    }

    /**
     * 晃动动画
     *
     * @param counts 1秒钟晃动多少下
     * @return
     */
    public static Animation shakeAnimation(int counts) {
        Animation translateAnimation = new TranslateAnimation(0, 10, 0, 0);
        translateAnimation.setInterpolator(new CycleInterpolator(counts));
        translateAnimation.setDuration(1000);
        return translateAnimation;
    }


    /***
     * 外部监听输入框事件
     */
    public void addMyTextChangedListener(MyTextWatcher myTextWatcher) {
        this.myTextWatcher = myTextWatcher;
    }

    public interface MyTextWatcher {
        void afterTextChanged(Editable s);
    }
}
